A simple library to draw pixels and good quality text to those typical oled displays.
This library enables pixel set/reset/invert for the two primary small OLED controllers. It also includes high quality character display.
This code base only supports I2C for the Pycom MicroPython implementation. The communication interface is separated, though, so other pythons/comm languages are easy to support. This is also tested / working as-is on the awesome Loboris MicroPython fork.
from graphicslib import OledGrafx
x = OledGrafx.OledGrafx(True)
x.PrintStrings("One","Two","3","4")Copy the graphicslib folder and contents to your project
| Module | Method | Description |
|---|---|---|
| OledGrafx | Extremely high level helpers | |
| OledGrafx(isFor1306) | Constructor. isFor1306==True for SSD1306, False for SH1103 | |
| PrintStrings(first, second, third, fourth) | This prints up to four given strings. They go in the available four lines on a 64 line display. | |
| OledDisplay | Lower level Oled methods | |
| OledDisplay(is1306=True, height=64, external_vcc=False, i2c_devid=0x3c) | Constructor where: is1306 is True for the SSD1306 False for the SH1106; height is the height in scan lines (32 or 64); external_vcc is set True if external power (this may not work on SH1106); i2c_devid is the i2c device id | |
| init_display() | This must be called first. Initializes hardware. | |
| clear() | Clear the oled display buffer | |
| display() | Move the display buffer to the display | |
| set_pixel(x, y, style) | Draw a pixel in the display buffer. Style = OledDisplay.PIXEL_ON, PIXEL_OFF, or PIXEL_INVERT | |
| poweron() | Enable the display | |
| poweroff() | Disable the display. All parts go to sleep. | |
| set_contrast(amount) | Set the white pixel brightness from 0...255 (one byte). 0=not very black. 255=full brightness. | |
| I2cHelper | This is the comm (I2c) interface wrapper. The modules don't pop exceptions but do return failure results. | |
| I2cHelper(address) | Constructor. Supply the I2C device ID. | |
| SendBuffer(data) | Sends the data bytearray to the device. Returns True if it worked, False on failure. Exceptions are printed to the console. | |
| SendString(text) | Sends the text string to the device. Returns True if it worked, False on failure. Exceptions are printed to the console. | |
| ReadBuffer(size) | Read size bytes from I2C. Returns None on failure else a bytearray. | |
| ReadString(size) | Read a string of size bytes from I2C. Returns None on failure else a string (UTF-8) | |
| FontDrawer | This module draws characters to the screen | |
| FontDrawer(font, oled) | Constructor. Takes a font (see the FontArialxx modules) and an OledDisplay instance | |
| DrawChar(theChar, x, y) | Draw a character at x,y (upper left). theChar should be an integer value not a character (string) | |
| DrawString(text, x, y) | Draw the text string starting at (x,y) using proportional spacing. |